Butterflies of Mexico, USA & Canada
Dion Skipper
Euphyes dion  EDWARDS, 1879
subfamily - HESPERIINAE
Euphyes dion  Frank Model
In the Americas there are 2365 known species of Hesperiidae. These are split into 5 subfamilies i.e. Pyrrhopyginae, Heteropterinae, Megathyminae, Pyrginae and Hesperiinae. The Hesperiines of which there are about 1040 species, are known as Grass Skippers because their larvae feed on grasses, bamboos and other monocotyledons.
All members of the subfamily Hesperiinae are sexually dimorphic - males being distinguished by the presence of a dark streak of androconial scales on the upperside of the forewing.
The genus Euphyes comprises of 21 species, distributed variously from Canada to Paraguay. Most species have dark earthy brown uppersides with cream or yellowish spots and streaks, although a few species are unmarked. The undersides also vary quite a lot, some species being pale earthy brown and devoid of markings, while others have a series of pale post-median spots. Several have yellowish or fuscous undersides with the veins mapped in yellow. Three of these have long yellow streaks on the underside - dukesi, bayensis and dion.
Euphyes dion is confined to the eastern states of the USA.
This species can be found in damp habitats where sedges grow, including meadows and fields, bogs, woodland glades, roadside ditches and streamsides.
The egg is pale green, and laid singly on Carex blades ( Cyperaceae ). The larva is dull translucent green with a thin dark mid-dorsal line. Its head is white, with a black spot on the crown, and orange vertical stripes. It feeds nocturnally and lives in a shelter constructed by folding and silking a leaf. The larva moves to a new shelter after each moult, and pupates in the final shelter.
Adult behaviour

Males perch on grasses and sedges which they use as lookout posts from which to survey passing females. Males imbibe at puddles and stream edges. Both sexes nectar at Lamiaceae, Asteraceae and other flowers.



Contact  /  About me

Butterfly-watching holidays

Trip reports

UK latest sightings

Frequently asked questions

Strange but true !

Taxonomy & Evolution



Enemies of butterflies

Survival strategies

Migration & dispersal

Habitats - UK / Palaearctic

Habitats - Tropical rainforests

Butterfly world census

Butterflies of the World :

British Isles


Amazon & Andes

North America

temperate Asia


Indian subcontinent

Malaysia & Borneo

Papua New Guinea

Australia & N.Z.

Insects of Britain & Europe

Insects of Amazonia

Moths of the Andes

Saturniidae - Silkmoths

Caterpillars of the World

Butterfly Photography

Recommended Books



Code of practice

Copyright - text & images

Copyright - text & images






All photographs, artwork, text & website design are the property of Adrian Hoskins ( unless otherwise stated ) and are protected by Copyright. Photographs or text on this website must not be reproduced in part or in whole or published elsewhere without prior written consent of Adrian Hoskins / learnaboutbutterflies.com

Site hosted by Just Host